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Search: id:A115447
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| A115447 |
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Numbers n such that the square of n is the concatenation of two numbers k and k-9. |
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+0
12
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| 71, 7235, 9701, 798981, 997001, 35324118, 64675883, 99970001, 3297392379, 6702607622, 7890726434, 8812181189, 9999700001, 897807218979, 917811219179, 979998999801, 999997000001, 46193210013657, 49751928874867
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OFFSET
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1,1
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EXAMPLE
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638370_638361 = 798981^2.
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CROSSREFS
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Cf. A030467, A106497, A115436, A115427, A115438, A115439, A115440, A115441, A115442, A115443, A115444, A115445, A115446.
Sequence in context: A049295 A017787 A017734 this_sequence A033527 A112615 A131454
Adjacent sequences: A115444 A115445 A115446 this_sequence A115448 A115449 A115450
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KEYWORD
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base,nonn
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AUTHOR
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Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 25 2006
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